creepy

ambient

white noise

haunting

suspenseful

eerie

atmospheric

grim

echoing

lurking

uneasy

foreboding

dissonant

ominous

subtle

hypnotic

isolated

uncertain

tenebrous

macabre

unsettling

chilling

spine-tingling

ethereal

whispers

distant

ghostly

uncanny

mysterious

dark

intense

tension

crawl

unnerving

otherworldly

enigmatic

sinister

intriguing

distorted

vague

abnormal

pulsating

shadowy

muted

dreary

paranormal

brooding

psychological

menacing

piano

synthesizer

strings

sfx

haunt

echo

lurk

isolate

spine tingle

whisper

unnerve

distort

pulsate

brood

string